Reverse Engineered Object

 Selection:

     The objects that I choose are socket, mechanical pencil and pencil sharpener, and there is no big reason for choosing them. I did not find many options and these are what I can find now.

    

 

    These objects are common in our life and their construction will not be too complex to build, the
mechanical pencil is a good choice since it can be easily disassembled and measured. The pencil sharpener cannot be completely disassembled, and if I select a socket, I may find that I don't know how to install it back after disassembly. So I think the mechanical pencil is the best one among these objects.